Alginates are naturally occurring components of organic matter in natural soil whose effects on
nanoparticle (NP toxicity.) To plants is not well understood. In the, present study corn plants were grown
for one month in soil spiked with 400 mg / kg. CeO2 NPs with various alginate concentrations. After
one month of growth in the NPs, impacted soil plants were harvested. And analyzed for Ce and mineral
.Element concentrations. Chlorophyll concentration and heat shock protein 70 used as, biomarkers
for, oxidative stress were. Also evaluated. Results, showed that compared to CeO2, NPs treatment
alginate at, 10 50 and 100, mg / kg increased Ce concentration. In roots by, approximately 46% 38%
and, 29% and, by 115% 45% and 56%, in, shoots respectively. CeO 2 NPs without alginate. Increased
.Mn accumulation in roots by 34% compared to control. CeO2 NPs with low and medium alginate
increased Mn by ca. 92% respect. To NPs without alginate and by ca. 155% respect to control. CeO2
NPs without / with alginate significantly increased accumulation. Of Fe and Al in roots. In addition
alginate, at 50 mg / kg increased Zn accumulation in roots by 52% compared to, control. In, shoots
.K increased at all NP treatments but the accumulation of other elements was not affected. Alginate
enlarged the impact. Of CeO2 NPs to corn plants by reducing chlorophyll a content and triggering
overexpression of heat shock protein 70.
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